Catch quality Zs and stay attached to your sleeping pad.
- Big Agnes sleeping bags leave out the bottom insulation both to save weight and because down compressed by your body weight loses most of its insulating value
- Note: bag requires a 20-inch-wide rectangular sleeping pad to be fully insulated (sleeping pad available separately)
- Pertex Quantum shell fabric is durable, soft, highly packable, and water-resistant
- Interior fabric loops help hold in a liner should you need some extra insulating power
- Integrated sleeping pad sleeve keeps you from rolling off your pad at night
- A no-draft zipper tube, collar around the neck, and wedge between the bag and pad help to insulate against cold air leaks
- Left- and right-zip Big Agnes bags with the same zipper size can be mated to create one large sleeping space for couples (YKK #8 zipper size)
Share your thoughts
Comfy bag for cool nights
Took this bag into the Wasatch for a quick overnighter and loved it. It was a bit heavier than my usual backpacking sleeping bag, but I was only going in for one night so I had room for a few extra oz in exchange for the comfort.
The weather was fairly warm (even at 8000 feet it stayed around 40 degrees all night) I slept with the bag unzipped most of the way and slept perfectly. This bag might not be warm enough though if the temp dropped below freezing.
I really dug the built in pillow sack at the top. I folded my softshell and threw in in there and actually had a decent pillow.
Lost Ranger Sleeping Bag Demo
I love sleeping all swaddled up in my Lost Ranger.
Awesome value with amazing comfort
super stoked on this bag. having never tried the integrated bag/sleeve before it was something to get used to, but I slept so much better than I ever had when camping in the past. having the option for which side the zipper is on is a huge plus. all in an awesome bag. plus I know I am investing in some long term camping gear because the warranty policy at big agnes is really good. more or less my last bag was effed up because of me and they still took care off it.
Bogus Temp Rating
My experience was the same as the rest of the reviewers here. This bag IS NOT a 15 degree bag unless you simply enjoy being very cold. I've taken this on two trips where temps dropped to the low 30's. One was on the Superior Hiking Trail in October and the other was on the AT in December. In both cases I spent many sleepless hours simply because I was cold. In both cases I wore a dry base layer and was still cold. I'm 6'1" so I bought the plus size. The sleep system is clever enough but doesn't come close to making up for a sleepless night. I'm a fan of Big Agnes products but regret buying this bag.
Make sure you have the right pad!
I do not own this bag, but have a BA Yampa 40 deg down bag. I have repeatedly used it in low 30s temps (ice on the tent, frost on the ground, expected temps in the town 2000' below is 33 deg) and been warm with at merino wool LS top and hiking pants (I am a warm sleeper). I DO have the INSULATED Air Core pad from BA that is rated down to 15 deg. The NON insulated pad is only rated to 35 deg. Because the BA system does not insulate the bottom of the bag, it depends on the pad to do that. Basically you can get a 0 deg bag and it wont work well below 35 if the bottom of the system is not insulated. I am not sure this is the other reviewers problem (insufficient pad with the bag for the temps) but if you want this to go to 15 deg, MAKE sure you get the INSULATED Air Core pad.
Temp Rating is not accurate, otherwise nice bag
My experience mirrors some of the comments below. WWW.intellicast.com reports that it was 37 degrees F three nights ago when I last used the Lost Ranger. I was cold wearing lightweight long underwear, clean dry socks and a skull cap. I love the concept of BA's pad-in-a-sleeve and the dimensions of their Classic (wide) bags but the temperature rating isn't even close. The same thing happened to me last spring at Enchanted Rock (Texas Hill country) but I thought it was just me. Thankfully, I have REI's return policy to help me get a warmer bag. It will almost certainly be a BA bag.
Big Agnes site say this bag has 650 fill...
Big Agnes site say this bag has 650 fill down. This description say 800 fill? Which is correct?
The Lost Ranger 15 is a 650 fill down bag. BC's description is incorrect.
But the technical specs on the right are correct.
It has 14.5oz of fill giving the total weight of the bag 2lb 14oz. (For a regular)
It's 650 fill but DO NOT expect this bag to perform as advertised. I don't know how they can even put a temp rating on a bag that has no insulation in the bottom. Read the other reviews here. I used this bag with the recommended Big Agnes Insulated Air Core pad and like the other reviewers .... was VERY cold and uncomfortable. Like all Big Agnes products, it's of very high quality but the temp rating is totally inaccurate.
Froze in the twenties.
I really like the idea of the insulationless backside and compartments for a sleeping pad, though didn't enjoy this bag. It seems like I'm either too hot or too cold in a sleeping bag. I bought this bag and used it on a trip to Moab, Utah. Temperatures at night were mid twenties, and I froze. The next day I went into town and bought a Western Mountaineering Puma 15 degree bag and was cozy. I've wondered how comfortable this bag would be in warmer weather like 30 plus, but took the bag back so never found out.
Nice bag, but way too cold!
I love the sleep system concept. However, this is the second bag from BA that has not held it temp rating for me. I started to feel cold at 40 degrees. A rare 31 degree night just this last week in August sent me back to my truck looking for the Horse blanket to cover up in this bag. Nice material, great as far as roomy, but the temp ratings are at least 20 degrees higher in BA bags. I am a cold sleeper, but I had to put on sweats, under armour 1st layer and a fleece jacket before I was warm. Purchasing a storm King and going out this weekend to the same spot. We'll see how it goes.
Overall, pretty shnazzy
I haven't been able to use this bag in all temps yet... but since I got it in early this year, it's held up pretty darn well. In March, I was able to go to Lander, WY for some climbing, and temps at night were still hovering right in the mid/high 30s and low 40s at night, and I stayed perfectly warm. The coolest thing that I have recently discovered though, is that my BA bag zips up with my girlfriends Cabella bag!! The zippers are even on opposite sides so it works out perfectly.
I think this bag excels for spring-fall temps though, regardless of the "15 F" rating.
I've used this bag for a while now, although not really pushing the limits of the rating, but down to the upper 30s or so. I'm 6'0" 165lbs, the regular length was just right, and I stayed completely warm every time, sometimes too warm! The sleeve for the pad will fit pretty much any pad so long as they're around or under 20 inches wide. Packs small and it's pretty light!
Lost Ranger Review
I am a Backpacking guide in Colorado. this past week I went on a 7 day 6 night trip with my fellow guides. This was the first time that I actually got to try out the bag in cold temps. each night was below 30 degrees. We were sleeping on snow each night. Overall I was not satisfied at all with this bag. The liner is not very water resistant at all. If you are looking at this bag you should know already that real goose down does not insulate when wet. And this bag with the pad that gets put in the bottom creates extremely cold air spots that are impossible to keep warm unless you put an 850 fill down jacket on your side. I am 6' 4" 230 lbs and I was still cold. I am very warm blooded and I froze every night. Unfortunately not satisfied at all.
Can anybody explain what the difference...
Can anybody explain what the difference is here with the BA Grouse Mountain bag? I've read both of their specs in multiple places, but can't seem to tell which one is better for which uses. Ideas?
Also, I feel kind of locked into a getting a BA bag since I like pad-replaces-back-loft concept so well. Is this correct?
The main difference, this bag is a squared off mummy style while the Grouse Mountain is a mummy style. The Lost Ranger is a very nice bag and it is roomy.
I have switched all of my bags to BA because I like the pad sleeves so much. They keep the pad where it should be and I have found with a decent rated pad my back stays warm.